【Wide Application】New upgraded Creality BL Touch V3.1 works for Creality Ender 3 V2/Ender 3/Ender 3 Pro/Ender 3S/Ender 3 MAX/Ender 5/Ender 5 Pro/CR-10 with 32 bit V4.2.2 or V4.2.7 mainboard (Note: Only applicable to the above 3d printers with 32-bit motherboard). 【Easy Firmware Upgrade】Download the BL-Touch firmware and copy it to the TF/SD card from the Creality official website, directly insert into the 3D printer card slot to update the program. No more need to use the ISP burner, which is more convenient to use.(File download: https://www.creality.com/download/ ) 【Easy Installation And Usage】With 3 different mounting brackets can be installed on multiple 3d printers. BL-Touch sensor is small in size and simple in structure, printing when connected. it can accurately measure the inclination of the hot bed and automatic compensation of Z axis, easily avoid the printing failure caused by uneven hot bed, so as to stable print. 【High-precision】The standard deviation of BL-Touch is only 0.005mm, making leveling more convenient. BL Touch is an auto leveling sensor for 3D Printers that can precisely measure the tilt of Bed surface and automatically adjust. It could work with any kinds of bed materials, such as ABS, PLA, glasses, woods, metals, plastic and so on. 【Genuine High Quality Set】Our package was included 1 set of auto bed Leveling Kit and an another replacement probe. Simple, smart and easy to install.